/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.dsl.runtime.plan;

import com.antgroup.geaflow.dsl.rel.GraphScan;
import com.antgroup.geaflow.dsl.runtime.QueryContext;
import com.antgroup.geaflow.dsl.runtime.RuntimeGraph;
import com.antgroup.geaflow.dsl.schema.GeaFlowGraph;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelOptTable;
import org.apache.calcite.plan.RelTraitSet;

public class PhysicGraphScanRelNode extends GraphScan implements PhysicRelNode<RuntimeGraph> {

    public PhysicGraphScanRelNode(RelOptCluster cluster,
                                  RelTraitSet traitSet,
                                  RelOptTable table) {
        super(cluster, traitSet, table);
    }

    @Override
    public RuntimeGraph translate(QueryContext context) {
        GeaFlowGraph graph = table.unwrap(GeaFlowGraph.class);
        RuntimeGraph runtimeGraph = context.getRuntimeGraph(graph.getName());
        if (runtimeGraph == null) {
            context.addReferSourceGraph(graph);
            runtimeGraph = context.getEngineContext().createRuntimeGraph(context, graph);
            context.putRuntimeGraph(graph.getName(), runtimeGraph);
        }
        return runtimeGraph;
    }

    @Override
    public PhysicGraphScanRelNode copy(RelTraitSet traitSet, RelOptTable table) {
        return new PhysicGraphScanRelNode(getCluster(), traitSet, table);
    }

    @Override
    public String showSQL() {
        return table.unwrap(GeaFlowGraph.class).toString();
    }
}
